Smoked my Crystalyte HT 3525

[alex77roma]

Hi everybody,
some days ago, I pushed my crystalyte 3525 on 40s lifepo4 and lyen to 100 ampere.
While running I read on my C.A. up to about 10 kw and after 11 km, I saw smoke get out from the motor.
Now the motor has less torque and absorbs a lot of ampere.
I think the high temperature have damaged the magnets.

Do you think I could repair the motor?

[itchynackers]

You tease us with that story and no pictures? We need pics or it didn't happen.

[Philistine]

While running I read on my C.A. up to about 10 kw and after 11 km, I saw smoke get out from the motor.

That is the coolest sentence of the day.

Are you saying you ran up to 10KW for 11km? I so hope that is what you are saying. You rock.

Usually when the smoke comes out that's the end of the show, but if your motor is still running (ie the windings haven't melted off their coating and shorting), then it sounds like you have just damaged the magnets as you say.

I say unzip the motors fly and show us the gnarled half eaten chokito bar your adventures and experimentation have produced. You're amongst friends, noone will laugh I promise

[neptronix]

You probably melted the copper somewhat, and you have a minor short, that will probably get worse over time.
I'm shocked that it is still running at all.

This motor is not capable of 10kW continuous at all, maybe 1/5th of that for an hour or so.



The shame here is that you did not cut dicks into it and film the process.

[Ypedal]

40S ???... ie : 40 series ( Lipo or Lifepo4 ? ) .. = 125~140v ?

[alex77roma]

I have no photo, because I have not time opening the motor yet and taking photos. I hope to make this in the next WE.
Yes, I read 10 kw and more on my C.A. while running, but obviously they were not continuos for 11 kilometers, but only for some seconds. 11 km is the distance that I run before seeing the smoke from the motor.
I knew that this motor cannot handle that power, but the adrenaline of going up to 90 km/h made me forget it.
I confirm that my battery in this run was 40s lifepo4 (40 x headway 38120s), over 130 volts.
I'd just like to know if is it possible sobstituite the magnets and where I can buy them or if I only have to take the motor and throw in the trash.

[alex77roma]

At the moment I only can show you these 2 photos, taken before damaging my motor:

[neptronix]

You're probably going to need a new stator, not magnets.

Time for a cromotor!!

[Ypedal]

agreed.. i bet the magnets are fine.. it's the copper coils that fried..

[alex77roma]

agreed.. i bet the magnets are fine.. it's the copper coils that fried..

If so, do you think is it possible remaking the copper coils?
Anyway, I will check what is the problem as soon as possible.

[neptronix]

You can...

Not a fun job, however.

[itchynackers]

Is your motor coated in epoxy? It looks like a red coating through the holes.

[alex77roma]

Not epoxy, but painted with red urethane spray.

[ohzee]

Damn so how was the ride before she smoked ? How long had you been pushing that motor ? You touch it burn your hand ?

Bet it was a fun ride.

[gogo]

Weaker magnets means higher Kv? Has your no-load speed increased? You might be able to use the motor as is with a lower current limit in the controller.

[John in CR]

Too bad you followed the masses with your ventilation hole placement. With more optimized placement the motor would have stood a much better chance.

[Dlogic]

I fried mine after only 4.7 Km running it at 5 Kw.

[Dauntless]

Wait a minute. You put URETHANE on your motor, that'll get HOT???? Then you BURNED IT UP?????? I can only guess how long you'd have to run a gas engine to put that kind of fumes in the air.

But surprise surprise, I was there. I did get the pictures.

[Spicerack]

I imagine even a leaf blower pointed at the windings wouldnt have prevented the burnup with 10kw going through it! Vent hole placement is irrelevant in this case...

[cassschr1]

Good one, Dauntless! LOL

[John in CR]

I imagine even a leaf blower pointed at the windings wouldnt have prevented the burnup with 10kw going through it! Vent hole placement is irrelevant in this case...

While the real culprit was too high a voltage resulting in very low efficiency at that gearing (way too big a wheel for the given no-load speed), since he made it 11km then effective ventilation vs ineffective ventilation could have made enough difference to make help the motor survive that first test ride.

[dogman]

Might have helped to have different holes. Would really help to stop sooner when running that kind of overwatt.

A more robust motor is going to be needed to run motorcycle power. I rather doubt this one is very fixable.

[Spicerack]

I imagine even a leaf blower pointed at the windings wouldnt have prevented the burnup with 10kw going through it! Vent hole placement is irrelevant in this case...

While the real culprit was too high a voltage resulting in very low efficiency at that gearing (way too big a wheel for the given no-load speed), since he made it 11km then effective ventilation vs ineffective ventilation could have made enough difference to make help the motor survive that first test ride.

Yeah, you might be right, the vent holes ain't ideal, I might also be right, but it doesn't really matter- we all get to learn from someone else's mistake!

I would like to see some burnt motor p0rn photos though...